Well-pumping apparatus



Dec. 27, 1927. v 1,654,329

J. B. HAWLEY, JR

' WELL PUMPING APPARATUS Filed Jan. 17, 1924 3 Sheets-Sheet 1 IL" .l.

I Inflenior J ZWBHqzMZey Jr:

Dec, 27, 1927.

' J. a. HAWLEY, JR

WELL PUMPING APPA-RATUS Filed Jan.17, 1924 s Sheets-Sheet 2 69%? /QwsDec. 27-, 1927. 1,654,329

J. B. HAWLEY, JR

WELL PUMPING APPARATUS Filed Jan. 17, 1924 3 Sheets-Sheet 5 ma 4 5 f /07,V //0 fizz/670507? LZbhU/BJI CZMZQyJT.

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U TED STA S} AT-Eur OFFICE.

JOHN nfinwnnr, .m, or roar won-r11, .rnxns, .nssrenon 'ro mwLnYmvmvrrons,

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WELL-PUMPING nrrnmz'rus.

Application filed January 17,1924. Serial a... 686,710.

The present invention has to do with imrovements in well pumpingapparatus. orc particularly the invention has to do with improvements inapparatus for pumping oil and similar liquids from tubular Wells.

The invention has reference to a pumping unit which is so constructedthat it can be lowered to the proper point in the well and there securedin place in such a manner that it can thereafter proceed with its normalfunction of pumping the oil up through the well above. p

- Still more particularly the invention has to do with a self-containedpumping unit which is provided with a transverse partitionwhich serves,when the pumpin unit is in place within the well, to estab ish a more orless oil tight partition at the position of the pumping unit, the partsbeing moreover so arranged that the "oil is drawn or pumped through thispartition and de-- livered above the same, so that when the well casingabove'the partition hasbeen completely filled with oil, the latter willbe dis-v charged from the top of the well. continuously thereafter. 1

It is an object of the invention to provide .a unit of the general classjust above referred to which is furthermore so constructed that when itis lowered into position within the well casin it will automaticallylock itself tothe we casing so .as to be held rigidl against rotation orvertical displacement. is nevertheless an object in this connection toprovide an arrangement such that the pumping unit may be raised out ofthe well when necessary for replacement or repair.

It is a further object of the invention to make satisfactory provisionfor transmitting thenecessary driving power down through the well to thepumping unit. Apreferred arrangement is that in which the pumping unititself is provided with an electric motor which drives the pump withinthe pumping unit. In this case the power is delivered from above by theuse of an electric cable reaching down through the upper portion of thewell. In this case the weight of the pumping unit and the column of oilsustained above it ma. be readily supported by a supplemental cab e ofsteel or the like, and

.there is.n0 rotative tendency on the. part of the pumping unit. In suchcase the provision of means for locking the pumping unit at a givenpoint within'the well casing may be e'hminated with satisfactoryresults.

'I also contemplate the delivery of the necessary dllVlIlg force to thepumping unit through the medium, of a cable which. is 1'0- tated bproperly a plied power at its upper end. uc h cable w en used; may alsoserve the functlon 'of sustaining all or a portion of the weight of thepumping unit, but suit able means should be provided at the pum ing unititself-for resisting the rotative ten' ency due to the rotation of thecable.

Othr'objects and uses of the invention i will appear from adetaileddescription of the same, which consists in the-featuresof' constructionand combinations of parts-hereinafter described and claimed.

1n the drawings: I Figure 1 shows a longitudinal section 'throu h anelectrically driven pumping unit embo ying the features of the presentinvention;

0 Fig. 2 shows a transverse section on the line 2-2 of Fig. 1, lookinginthe direction of the arrows;

- Fig. 3 shows a transverse section on the line 33 of Fig. 1, looking inthe direction of the arrows;

Fig. 4 shows a longitudinal section A through another form of pum ingunit which is driven by a rotative cab e. In the construction of Fig. 4the transverse parti-. tion is placed above the position of the lockmgdogs; 7

ig. 5 shows a transverse section on the line .5'-5 of, Fig; 43 looking.in; the direction of'the arrows;

Fig. 6 shows a transverse section on the line 6-6 of Fig. 4, looking inthe direction of the arrows;

- Fig. 7 shows a longitudinal section of another form of pumping unitwhichis also driven by the use ofa rotative cable, but in this case thetransverse partition is placed belowthe position of the locking dogs;

Fig. 8 shows a transverse section on the line 8 -8 of Fig. 7, lookingin'the direction Y of the arrows;

Fig. 9 shows a transverse section on the line 99 of Fig. 7, looking in.the direction of the arrows; and

Fig. 10 shows a transverse'section on the line 10-10 of Fig. 7, lookingin the direction of the arrows. v

Referring first to the construction shown 'block 18. These 'ceives oilthe cable 15. The detailed construction of this motor is not illustratednor referred to, since, manifestl many difierent forms of motor, eitherdirect or alternating current, may be used.

The motor is preferably mounted within an oil tight casing including thecylindrical member 16, the upper head 17, and the base parts arepreferably brought together in oil tight fashion, so that if desired theinterior chamber 1.0 of the motor itself may be packed with a suitablelubricating and insulating oil. WVhen the motor is of the alternatingcurrent type, the presence of this oil will in no wise interfere with asatisfactory operation thereof, and

in many cases the commutator and-brushes of a direct current motor willalso operate with entire satisfaction Within an oil bath. The electriccable 15 preferably passes through a stufling box 20 at the point whereit enters the motor unit so as to prevent the transfer of oil at thispoint.

The armature 13 drives the vertical shaft 21 whose upper end finds abearing in the head 17, and whose lower end passes out through the baseblock 18 through a suitable stufling box 22. This stufling box willserve to effectively prevent interchange of oil along the motor shaft.

Beneath the motor unit is a pumping unit designated in its entirety bythe numeral 23. The same is illustrated as comprising a gear pump havingthe central gear 24 meshing with a com anipn gear 25, both of said gearsworking within the pumping chamber 26 in the pump block 27. This chamber26 refrom'below through an inlet port 28 which in turn communicates witha transverse passage 29 beneath the gear pump 28 is formed in the formeda discharge-port in the cap block 32, said discharge port-being than thewell.

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itself. Such transverse passage "29 receives oil rising through acentral tube 30, the lower end of which reaches below the pumpingunitand preferably carries a strainer or screen 31 at its inlet end.

' The pumping unit is closed at its upper side by a cap block 32, andalso includes a base block 33 at its lower side. The port base block,and there is designated by the dotted circle 34 in Fig. 3. The oil isdischarged through said port upwardly above the pumping unit and risesthrough the well past the motor unit which is of smaller size Thecentral gear 24 of the pumping unit preferably lies -directly below. themotor shaft 21 with which it is conveniently con-- nected by a directdrive. Beneaththe pumping across the well casing and serves toeffectively prevent a return flow of the oil delivered above the pumpingunit. This partition ineludes a series of upwardly facing cup leathers35, 36 and 37 together with the intermediate spacer blocks 3 39 and 40and the base block -41.-;, All of these blocks are conveniently drawntogether in rigid'fashion by a series of through bolts 42, 43. and 44,as clearly illustratedr The through bolts above referred to also serveto join the motor and pumping units together, suitable spacer blocks 45being placed on the through bolts and between the two units. \Vhen thisconstruction is used the through bolts may also be carried clear upthrong-11 the motor uni so as to draw its head and base blocks solidlyinto engagement with the shell 16. The oil delivered from the pumpingunit finds its way freely between the spacer blocks 45 and thence uppast the motor unit.

Owing to the considerable weight of the combined motor and pumping unittogether with the column of oil abovethe same, I prefer to provide acable 46 by which it may be'sustained from the upper end of the wellcasin This cable is conveniently connected into a collar 47. on the capblock 17 .by the use of a set screw or the like 48.

In connection with this construction it will be noted that by initiallyfilling the motor chamber 19 with suitable insulating and lubricatingoil the hydrostatic pressure due to the column of oil standing above thepartition is substantially balanced and only a very slight seepage cantake place into the pumping unit past the stutfing box 22. This is animportant feature when it is considered that in many cases these pumpingunits are used in very deep shafts, in some cases more than 2300 feet,so that the hydrostatic pressure exceeds 1000 pounds per square inch.

Referring to the construction illustrated in Figs. 4, 5 and 6, thepumping element 40 comprises a gear pump having the central gear 50 andthe companion gear 51 working within a chamber 52.. The central gear 50is mounted'on a drive shaft 53 whiehpasses up through the head of thepumping element and is connected to the suspending-cable 54 by asuitable coupling 55.. This suspending cable reaches down through thewell frontthrough an inlet port 59 which reaches sidewise and connectswith a central downwardunit vthere is estab lrshed a transversepartition which extends vThe oil is delivered to the gear pump servetodraw these parts rigi sockets the chamber 83.

nos 4,3150

ly reaching tube 60. The lower end of the tube is provided with suitableinlet openings and screens 61. 1 The oil discharged from the gear pumrises through a port in the upper end of t e pumping element anddesignated by the numeral .62.

' By rotating the gear 57 and the supporting cable, the ear pump isdriven.. This creates a con'si erable rotative tendency in the casing ofthe gear pump and the same must be effectively resisted as otherwise thewhole unit will turnaround with the rotation of the cable. 1

Beneath the gear pump is laced a transverse partition which exten sclear across the well casing and includes the on leathers 63 and64separated b a spacer lock 65. A cap block 66is place above the onleather 63 and a base block 67' below t e cup leather 64. A series ofthroizfih bolts 68 y together.

A series of -lugs or other separating connectors 69 are p aced betweenthe pumping element-49andthe cap block 66.

A series of dogs 70 preferably three-in number are ivotally mounted"within 72 in the ase member 67. These pivotal mountings are provided.by pins 73. A sprin 74 normally tends to roject'each dog into t eworkin osition w erein it lies at a slight angle be ow the horizontal,and wherein its outer looking I gee engage firmly with the well casing.A col ar 75 is initially placed around the dog 70 before the pumpn unitis lowered into the well, and said co ar is sustained against ordinaryshock by the friction of the do 5 against it. When the workin position'0 the pum ing unit is reache produced and the collar 75'is thus thrownown and release sjthe do Ordinarily the collar will fall upon an besustained by a flange 76 at the lower end of thebase block 67 so as toprevent said collar from dropping to the bottom of the well.

In the construction shown in Figs. 7, 8, 9 and 10, the pumping unit isalso sustained and driven by a cable, 77 whose u r end is secured to thedriving gear 7 8. This driving gear is placed above the cross block 79at the upper end of the well andmaiyL freely rotate by rggson of thepresence of t e roller bearthe present construction the pumpingelementincludes a central gear .81 together with a companion car 82 workingwithin The oil is drawn throu h an inlet port 84 inthe base block'85,reac ing' said inlet port from an inlet pipe 86' havin the screen 87at'its lower end. The oil is isch'arged from the pumping unit throu h aport-88 which leads sidewise through t e cap block 89 of the pumpingelement.

Abovethe-pumping element is placed a .dog block, 90 havmg thedogs 91pivoted ..In order to hold the dogs within their sockets while themediumof aroller bear on the lower end of the shaft .98 trans- 8 'a' pair. ofcup lea within the well, a vio ent shock is means. holding all of saidelements within the sockets 92 on the pivot pins 93. x

The springs 94 tend to project the'dogs into the outer working pos tionwhen they are released.

pumping unit is being lowered into the wel a collar 95 is providedaround the dog block 90. Said collar 95 has a downwardly reaching stem96 at the upper end of which is the inwardly reaching 7 .arm 97 whichcan .be struck by a body tains the wei ht of the pumping unit and thesuperimpose column of oil through the 99. A flange mits the force to therollerbearing. This flange also carries a pairof drive pimons 101 and102 which-mesh with a stationary annu'-. l'ar gear 103 which surroundsthem. They also'mesh. with a endof the shaft 105 which reaches upwar 1yfrom the central gear 81 of'the pumping element.

The transverse partition is established by with an intermediate spacerblock 108 and the cap and base blocks 109 and 110 respectively. -.Aseries of throu h bolts'111, 112

and 113 reach upwardly t rough the entire dimensions of the pumpingunitand serves to secure all of the parts properly together.

While I have herein shown and described only certain embodiments in thefeatures of my present invention, still I do not limit myself to thesame the claims.

I claim:

1. A well pumpin unit 'comprisingfin combination a motor e ement andaumping element in vertical alignment an of size suitable for. convenientintroduction into the well casing, a spacing means between said pump andmotor elements, a transverse artitionwbelow said pumping element and aving a passage for the flow of .fluid to sa d pumping element, rodspassingthrough said transverse partition, (pumpmg element, spacingmeans, and sai motor element, and I said rods in lace whereby are securetogether as a 2. In a well pumping apparatus, a pumping element of-asize suita e for convement introduction into a well casing, a transversepartition below said pumpin element insertable therewith into sai wellcasing, said transverse partition comprising a plurality of a erturedartition blocks and a pluralityo apertur therebetween, and meansforclamping said spacing blocks pinion 104 on the upper 00 ers 106 and 107together 95 except as I may do so in, 105

and gaskets together and for securing said partition compris' aplurality of spacing partition in fixed relation to said pumping locksand a plura ity 'of gaskets therebe- 10 element. 4 tween having upwardlydirected annular 3. In a well pumping apparatus, a pumpflanges, andmeans for clamping said blocks 5 ing element of a size suitable forconvenient and gaskets together and for securing said introduction intoa well casing, a transverse partition in fixed relation to said pumpingpartition below said pumping element and element. 15

ii insertable therewith into the well casing, said JOHN B. HAWLEY, JR.

